Add: errcheck and online GoBuild

README.md

@@ -460,6 +460,7 @@ Go software and plugins.
 ## Code Analysis
 
 * [doc](http://godoc.org/code.google.com/p/rspace.cmd/doc) - Go documentation tool that produces an alternative doc format.
+* [errcheck](https://github.com/kisielk/errcheck) - Errcheck is a program for checking for unchecked errors in Go programs.
 * [goast-viewer](https://github.com/yuroyoro/goast-viewer) - Web based Golang AST visualizer.
 * [GoCover.io](http://gocover.io/) - GoCover.io offers the code coverage of any golang package as a service.
 * [goimports](http://godoc.org/code.google.com/p/go.tools/cmd/goimports) - Tool to fix (add, remove) your Go imports automatically.
@@ -487,6 +488,7 @@ Software written in Go.
 * [Boom](https://github.com/rakyll/boom) - Boom is a tiny program that sends some load to a web application.
 * [gaudi](http://gaudi.io/) - Gaudi automates the setup of isolated and decoupled dev environments.
 * [gobrew](https://github.com/cryptojuice/gobrew) - gobrew lets you easily switch between multiple versions of go.
+* [GoBuild](http://gobuild.io/) - Online compile Go projects to Windows, Linux and MacOSX.
 * [godbg](https://github.com/sirnewton01/godbg) - Web-based gdb front-end application.
 * [Gogs](http://gogs.io/) - A Self Hosted Git Service in the Go Programming Language.
 * [go-selfupdate](https://github.com/sanbornm/go-selfupdate) - Enable your Go applications to self update.